# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 371
1. ## math

Peform each indicated operation by using LCD and simplify the result. Can you please show me the steps on how you got the answer because I don't understand how to these problems. Thank you. y+2 over y^2+2y+4 + 1 over y-2 z-3 over z^2+z-6 + 2z+1 over z-2

asked by Bradley on April 28, 2010
2. ## math

Write the slope-intercept (y = mx + b) form of the equation from the information given. The line goes through the points (1/2, 3/2) and (-1/4, 5/4) I really don't know how to do this problem, can someone please show me how?

asked by Abby on October 26, 2015
3. ## bio

Name some plants (or even animal products) that are said to have properties that are beneficial to humans. Describe how you would show whether those claims are true. please a need help i am in the hospital

asked by Anonymous on August 3, 2011
4. ## Chemestry form two

Balance chemical equations to show the reactions that occur when apice of sodium metal is ex posed to atmosphere

asked by Kevin ochieng on July 13, 2011
5. ## Math

We spin a roulette wheel 720 times. Find the following expectations: # of greens # of reds # of spins that show 7, 14, 21, or 28

asked by William Marand on March 28, 2019
6. ## geometry

determine the length of the sides and the measures of the angels for the congruent quadrilaterals ABCD and A'B'C'D' there are 2 diagrams but don't know how to show it to you

asked by Carol on June 28, 2011
7. ## Math

a camera's focal length, F, is related to the distance from the subject, S, and the image distanc, I, by the equation 1/S+1/I=1/F Please show all your steps! thanks you

asked by Sunny on September 16, 2014
8. ## Economic

suppose now the inputs of mangoes are taxed. draw the graph to show the economic effects if demand is elastic

asked by lavinia on May 3, 2011
9. ## Chemistry

Show the steps needed to determine the energy in a red photon of 7.0 x 10^2 nm. E= h * (c/λ) 6.62e-34 * (3e8/2e-7) 2.837e-19 J? Is this correct?

asked by Anonymous on April 30, 2017
10. ## Chemistry

AP Chem ---- Which type of radiation is emitted when chromium 51 decays into manganese 51? Show the nuclear equation that explains it.

asked by Dani on May 22, 2015
11. ## HISTORY fAIR

CAN SOMEONE HELP FIND QUOTES FOR HISTORY FAIR IS DUE TUESDAY. MY THEME IS THE CHICAGO AUTOMOBILE SHOW. ANY HELP IS APPRECIATED.

asked by uoeihrfkwdihfhr3kohvred[hqr';elhgs.'hg]s on March 11, 2018
12. ## chem

what is the net ionic equation of tin and potassium carbonate: Sn(s) + K2CO3(aq) --> K(s) + SnCO3(aq) show the steps plss

asked by emma on May 21, 2015
13. ## college math

In regards to my question \$7000 raise previous salary \$55,000 would the increase be 14%. Pleae show how you recived this answer

asked by Lourane on May 26, 2012
14. ## Atmospheric Science

Show that if the planetary albedo is 0.3, a change in solar constant of 1 W/m-2 results in a global-mean climate forcing of 0.175 W/m-2.

asked by John on November 20, 2009
15. ## stationary point

find the stationary point of the function z=4x^2+10xy+4y^2-x^2y^2 and also determine their nature plz show me step i don't know it

asked by samara on September 27, 2016
16. ## Computer Science

Given an undirected graph G = (V,E), does there exist a set D ⊆ V of size k such that every v ∈ V is either in D or adjacent to at least one member of D. Show that DS∈NPC. You may only assume that VC is known to be NP-Complete.

asked by Jerry on December 4, 2013
17. ## Math

A general point on a curve is P(3+4costheta,2+4sintheta). Show that the locus of P is a circle and find the centre and radius

asked by Jennifer on April 25, 2017
18. ## Astronomy

What percentage of the stars surveyed show evidence of planets? (a) About 50% (b) About 30% (c) Less than 5% (d) Less than 1% I posted this earlier but there was not no response. I think the answer should be 40% but there is no option for that.

asked by Annonymous on March 4, 2016
19. ## math

x/3+2=x/6 In solving this problem do I divide 3 from both sides are what. I am a bit lost. please show me the steps so I can see if I am right or wrong in my calculations. Thanks you in advance.

asked by jessica on August 27, 2010
20. ## precalculus

How many solutions will the following systems of equations have? x^2+y^2=10 x+y=4 a. infinite b. 0 c. 1 d. 2 I'm thinking A. but I just want to make sure. If you have an answer that is different could you possibly show me how you got it, it would really

asked by Ally on May 14, 2014
21. ## chemistry

3Ag(s) + 4HNO3(AQ) = 3AGNO3(aq) + NO(g) + 2h2o(l) How many grams of AgNO3 can be produced by recating completely 88.0g of Ag? please show me the step.. thank you

asked by jhong on April 5, 2012
22. ## calculus

An automobile travels 4 miles road in 5 minutes. Use the Mean Value theorem to show that the speedometer reads exactly 48 mph at least once during the trip.

asked by smith lionel on January 13, 2012
23. ## Math

Find the length of the longest steel rod which could fit into a cardboard carton of dimensions 1.2 m by o.8 m by o.6 m. Please show your workk :)

asked by Mellany on November 28, 2012
24. ## maths

find equations for the tangent and the normal at P (1n2, 2k) on the curve with equation y=ke^x, where k is a constant. (b) given that y=sin^-1x, show that (1-x^2)d^2y/dx^2-xdy/dx=0

asked by skangele on October 3, 2013
25. ## math

Hello, Is log_3 (5) equal to log_5 (3)? Explain your answer. Do not evaluate the logarithms. is my question. What is a surefire way to show this is false.

asked by Adam on March 20, 2013
26. ## physics

A particle (p) moves along the curved surface (s). Show that p will remain in contact with s provided that at all times its speed v≥√rgcosteta.

asked by ermy on January 13, 2017
27. ## Math

How do I express these in scientific notation AND Log10 form? 1) ln(8.1) 2) 32.8 x 10^-2 + 3.15 x 10^-1 3) 10^-2 x 10^4.5 4) 10^-45 5) 8^2.34 Please show some effort, and please stop posting under multiple names.

asked by Carl on January 21, 2007
28. ## Math

Suppose A and B are events with P(A)=1/6, P(B)=5/6 and P(A and B)=1/12. Find each of the following a. P(AorB)= Formula: P(A)+P(B)-P(A&B) 1/6+5/6-1/12=11/12 b. P(not A) 1-1/6=5/6 c.P(not B)= 1-1/12=11/12 I am lost here can please correct any mistakes I did

asked by Keonn'a on October 9, 2018
29. ## history

Show how the role of the federal government was viewed by different groups at different times in the 20th century? please anyone help me to ans this question.

asked by bindiya on July 1, 2009
30. ## Chemistry 101

Convert 115 miles to feet, inches, centimeters, millimeter, and kilometers. Show set-ups.

asked by Lilly on January 25, 2016
31. ## chemistry

a. trans-4-octene is reacted with H2O in the presence of H+. Do not show stereochemistry draw hydration product formed

asked by Anonymous on February 23, 2011
32. ## statistics

Suppose that contamination particle size in micrometers can be modeled as f(x) = 2x−3 for 1 < x. a. Show that f(x) is a probability density function. b. Find the mean X.

asked by latha on October 9, 2011
33. ## statistics

Suppose that contamination particle size in micrometers can be modeled as f(x) = 2x−3 for 1 < x. a. Show that f(x) is a probability density function. b. Find the mean X.

asked by latha on October 8, 2011
34. ## physics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

asked by Peg on May 19, 2014
35. ## History

What African American was the first to star in a major television show in 1965 called "I Spy"? Bill Cosby?

asked by Colton on February 9, 2012
36. ## physics

Give two examples to show how physics help in understanding the concept of evolution, biological systems of living organisms.

asked by simran on June 10, 2016
37. ## Science

A boat is sailing 42 km/hr upstream on a river that is moving at 16 km/hr downstream. What is the velocity of the sailboat.....can you show me the formula too...not understanding this

asked by Joy on November 28, 2012
38. ## algebra

Want to make sure I am doing this correctly. Use the Intermediate Value Theorem for polynomials to show that the polynomial function f(x)has zero between the numbers given. f(x)=3x^2-x-4 ; 1 and 2 3(1)^2-1-4= - 2 below zero 3(2)^2-1-4= 6 above zero Am I

asked by Eric on February 14, 2017
39. ## chemistry

How many grams of Mg(OH)2 are needed to neutralize 55 ml of 0.25 M HCl . according to the following reaction. (show all calculations for credit) Mg(OH)2 (aq) + 2HCl(aq) --- MgCl2 (aq) + 2H2O(l)

asked by Cory on March 20, 2013
40. ## Biology 110

by means of a chemical equation, show how the body rids itself of the major end-products of metabolism. Please explain.

asked by Susan Yi on October 28, 2011
41. ## Chemistry

. Show a chemical reaction by which hardness is added to water that also explains the formation of caves in limestone formations?

asked by Lee on October 6, 2015
42. ## English

Absurdism is the attempt to show the ________ of the human condition. silliness seriousness uniqueness hopelessness my answer is the last one

asked by Steve on March 19, 2017
43. ## Chemistry

Write out a balanced chemical equation to show the dissociation reaction of magnesium carbonate in distilled water

asked by Lisa on September 12, 2017
44. ## physics

How do the laws of physics apply to others sciences such as biology chemistry and earth science? And give an example to show the connection.

asked by nulloa on September 6, 2016
45. ## CHEM

H2Te CH3CHO CH3CN H2Se polar or nonpolar? Also, anyone know any sites that show pics of the shape of molecules?

asked by RICHY on September 20, 2010
46. ## chemistry

show by calculation of z the behavior of (.25 mole) gas sample at the following conditions (ideal or real)at temperature 100c 1-p=0.25 v=12

asked by kamal on June 3, 2016
47. ## phyhics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

asked by denise on September 8, 2014
48. ## Physics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

asked by Chantrell on August 4, 2013
49. ## English

Show apostrophes The moons rays shone feebly on the path, and I heard the insects chirpings and whistlings.

asked by Jared taylor on December 1, 2015
50. ## math

write an equation to show the relationship between the score received and the number of questions the students answers correctly

asked by zach on August 25, 2011
51. ## Health

What reason do studies show why more people with high blood pressure and diabetes live in the suburbs then in the city

asked by Besty jadper on February 16, 2019
52. ## college physics

Show that 480W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2m in a time interval of 1.5s.

asked by bbragg on October 17, 2013
53. ## science

Describe how you would investigate effect of ph on enzymes rate. Draw a labelled diagram to show how you carried out the experiment

asked by donald on January 1, 2017
54. ## Math

Another one. I get real confused with all this Multiply, Simplify if possible 3x^3/11q^3 * 121q^6/9x the answer I got was 363q^6x^3/99q^3x can you please show me how if it is wrong

asked by Anonymous on October 18, 2009
55. ## calculus

Let f(x) = [(2x2+4 x −70)/(x−5)] Show that f(x) has a removable discontinuity at x=5 and determine what value for f(5) would make f(x) continuous at x=5 Must define f(5)= I've been stuck on this problem for some time how would i do this one? Ty!

asked by Aric on February 7, 2011
56. ## analytic geometry

for all parabolas, show that the angle between the line segment joining endpoints of the latus rectum to the vertex is 2 arctan 2

asked by judith on September 26, 2015
57. ## Math, Intergration

C(T)=0.78125-0.5e^(-0.64T) (T+1.5625) Using this equation, I don't understand 'Intergration by parts' to show this and what it means Any help is appreciated!

asked by Amy L on March 21, 2015
58. ## Chemistry

How much heat energy, in kilojoules, is required to convert 48.0g of ice at −18.0 ∘C to water at 25.0 ∘C ? Please show all steps. i don't know where to start

asked by Anna on December 9, 2014
59. ## Physics

if light touching a surface has an intensity of about 1000W/m^2, how many numbers of photons per m^2 per sec does this show? wavelength of P=600nm

asked by Emma on May 28, 2009
60. ## Grand Canyon University

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

asked by Cecilia on October 27, 2012
61. ## physics

Calculate the time required for an astronaut to free-fall 50 m on the Moon. Please show and explain steps answer is 7.9s

asked by jake on July 8, 2013
62. ## writing skills

An interjection is always A. preceded by preposition. B. followed by an exclamation point. [C. related to another word in the sentence.] D. intended to show feeling.

asked by jake on July 2, 2012
63. ## phy

. Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

asked by merle on February 17, 2013
64. ## math

I’m thinking of a number that when multiplied by 8.7 gives a product of about 7.2 . Give 5 numbers to answer this question and show how your estimations are reasonable.

asked by Vei on October 20, 2017
65. ## aacolsn

in a single throw fair die what is probability that an odd number or perfect square greater then one show up?

asked by hussaini gumel on December 14, 2015
66. ## math

in a single throw fair die what is probability that an odd number or perfect square greater then one show up

asked by hussaini gumel on December 14, 2015
67. ## Physics

A red colored ball tossed upward reaches a maximum height of 3.0m. show that the initial speed is 7.7m/s^2.

asked by Erin on September 29, 2015
68. ## chemistry

Please show me how to calculate the number of moles in 8.45 x10 to 21st power formula units of calcium chloride?

asked by Bev on January 30, 2011
69. ## Ggss

in a single throw fair die what is probability that an odd number or perfect square greater then one show up

asked by sadiya umar on December 14, 2015
70. ## Calculus I

Show that the equation x^4 + 4x + c = 0 has at most two real roots. I believe we're supposed to prove this by proof of contradiction using Rolle's Theorem, but I'm not quite sure how to do this problem.

asked by Emily on March 5, 2012
71. ## Calculus

Let f(t) be an odd function Using properties of the deﬁnite integral plus simple substitution show that if f is continuous on [−a, a] for a positive number a, then Z a −a f(t) dt = 0

asked by Rory on December 4, 2011
72. ## organic chemistry

Show the reaction equation and mechanisms of a mixture of napthalene,p-nitroaniline and benzoic acid dissolved in dichloromethane?

asked by Agnes on December 2, 2010
73. ## math

(0.08b^{4m+8})\div (18b^{m−2}) this broil confuses me, can u guys plz show how its solved but not give me the answer

asked by Anonymous on December 9, 2016
74. ## organic chemistry

Show the reaction equation and mechanisms of a mixture of napthalene,p-nitroaniline and benzoic acid dissolved in dichloromethane?

asked by Agnes on December 2, 2010
75. ## Algebra Binomial Theorem

Hi, can somebody help me with this math problem I am stuck on? How do I use binomial theorem to expand(2x – 5y)^3. I need to show my word so any help you can provide would be greatly appreciated.

asked by Dakota on April 5, 2013
76. ## math

a c-shaped tile (2 in the top row, 1 on the second, 2 on the bottom) can be placed on a number chart so that the sum of the numbers covered is 29. show how this can be done

asked by nour on June 12, 2012
77. ## English

in what way does Tom buchanan from chapter 1 and 2 of "the great gatsby" show moral and spiritual decline of the upper class??

asked by Sabrina on October 10, 2010
78. ## Chemistry

How many joules are required to convert 34 grams of ice at 0 degrees celcius to water at the same temperature? (Can you please show how you go the answer)Thanks!

asked by Ashley on October 26, 2008
79. ## Physics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

asked by Sabrina on April 23, 2013
80. ## Anthropology

Use modern advertisements to show examples of gender roles and how they are changing. pls. answer by 7:00 a.m. Eastern time.

asked by Alex L. on February 11, 2011
81. ## Algebra

Hi I am learning about rational expression and so far I am pretty good at multiplying. My question is how do you divide? Here is a problem that I am having trouble with.. 6p-18 3p-9 ----- / ---- 9p p²+2p This is what I have so far 6(p-3) 3(p-3) ------ /

asked by jessica on June 12, 2007
82. ## chemistry

How many milliliters of 1.25 M LiOH must be added to neutralize 34.7 mL of 0.389 M HNO3? Show your working by writing balanced equation.

asked by fathu on September 7, 2018
83. ## ccl

An ecological footprint is a map that is designed to show the agricultural area that is needed to support all of the population within the world.

asked by Anonymous on May 24, 2011
84. ## math

complete to show how you can find the sum by making a ten, hundred, or thousand. ex. 9 + 5= 9+1+____ 10+_____ ________

asked by Anonymous on September 26, 2011
85. ## Com155

Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or television show

asked by Cassidy on September 4, 2010
86. ## 0.5mols of a monoalkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

0.5mols of a mono alkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

asked by EMMANUEL on October 12, 2016
87. ## series

find the nth term awmd partail sum of the harmonic series below 1/3+1/8+1/15+1/12+..........show working plz

asked by help on March 19, 2016
88. ## chemistry

0.5mols of a mono alkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

asked by EMMANUEL on October 12, 2016
89. ## Advanced Biology

Describe how the Principle of Segregation is show in th dihybrid cross of rabbits. I think it would be that each character separates into a different sex cell.

asked by Jennifer on December 2, 2009
90. ## calculus

Find the domain and range of the given functions. 1. h(x)= (squareroot4x+1)+3x-5 2. f(x)=3cos(x/3)-1 3. g(x)= log (x+2) Can someone show me the steps to figure the above problems?

asked by Janet on February 12, 2011
91. ## maths curve need help

If the area between the curves y=√x and y=x^3 is rotated completely about the x-axis,find the volum of the solid made? Please show step

asked by putayoto on March 6, 2017
92. ## math

find the length of the longest diagonal through a cuboid of sides 4cm by 13cm by 16cm. please show working

asked by Anonymous on December 9, 2016
93. ## Calculus Help

Let c and dd be positive real numbers. Show that regardless of c,d, the parabolas r=c/(1+cos(theta)) and r=d/{(1-costheta) intersect at rights angles

asked by Sarah on December 3, 2010
94. ## Math

Factor each expression completely. Can you please show me the steps on how you reached your answer so I know how to these types of problems thank you. 3x^4+13x^3y-10x^2y^2

asked by Heather on October 10, 2010
95. ## Science

pH of: 2.50mL of 0.100M nitric acid added to 30mL of 0.200M potassium hydroxide Please show me working out :)

asked by Laura on September 20, 2012
96. ## Calculus

Evaluate the limit, if it exists. (If an answer does not exist, enter DNE.) lim t^2-64/2t^2+17t+8 t→−8 Please show steps!

asked by Anya on September 8, 2018
97. ## dt, textiles (sewing machine)

Question 1. what is the stitch length and width for the following stitches? straight stitch length:....? width:....? zig zag stitch length:....? width:....? question 2. tension what will happen to my work if the sewing machine stitch is too loose? what

asked by me on October 9, 2007
98. ## spell

What would be a good title for this essay? Also, what is wrong about this essay? Essay: Animals have been used in medical research for centuries. Most of the animals used for research are rodents such as rats, mice, hamsters and gerbils. Some dogs, cats

asked by Walker on March 31, 2008
99. ## chemistry

Suppose 70.00 mL of a lithium hydroxide, LiOH, solution requires 55.42 mL of a 0.1050 M solution of propanoic acid, C2H5COOH, for neutralization. LiOH + C2H5COOH ® C2H5COOLi + H2O What is the concentration of the base solution? 0.08313 M 0.1663 M 0.3325 M

asked by hope on October 9, 2010
100. ## chemistry

use the following data, as appropriate, to estimate the molarity of a saturated aqueous solution of Sr(IO3)2. Molarity of a saturated aqueous solution of Sr(IO3)2 Sr(IO3)2(s) delt h kJ/mol=-1019.2 delta G kJ/mol=-855.1 delta S= 234 J mol-1K-1 Sr^2+(aq)

asked by Allyx3 on December 2, 2012